RFR: 8334999: RISC-V: implement AES single block encryption/decryption intrinsics

Sun Jun 30 14:06:53 UTC 2024

Hello everyone! Please review this port of vector AES single block encryption/decryption intrinsics. On my QEMU with `Zvkned` extension enabled the `test/hotspot/jtreg/compiler/codegen/aes/TestAESMain.java` test is OK. I know that currently hardware implementing this extension is not available on the market but I suppose this PR can be a good starting point on supporting AES intrinsics for RISC-V in OpenJDK.

-------------

Commit messages:
 - 8334999: RISC-V: implement AES single block encryption/decryption intrinsics

Changes: https://git.openjdk.org/jdk/pull/19960/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19960&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8334999
  Stats: 261 lines in 3 files changed: 250 ins; 11 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/19960.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19960/head:pull/19960

PR: https://git.openjdk.org/jdk/pull/19960